STAMFORD - Public safety workers, officials and residents will mark the 14th anniversary of the 9/11 attacks Friday with at least three memorials scheduled throughout Stamford.

Gov. Dannel Malloy and Mayor David Martin will attend the dedication of a live tree archway at the Bartlett Arboretum at 151 Brookdale Road at 11:30 a.m. An hour later, the mayor, police Chief Jon Fontneau and deputy fire Chief Tim Conroy will join the survivors of Stamford residents who perished in the attacks for a ceremony at Jackie Robinson Park of Fame at 860 Canal St. And at 7 p.m., city firefighters will host a memorial ceremony at the Woodside Fire Station at 1620 Washington Blvd.

“The ceremony memorializes the 2,749 innocent souls that lost their lives, including 343 New York City firefighters, 161 Connecticut residents and nine Stamford citizens,” Ben Cohn, a spokesman for the city’s firefighters’ union, wrote in a prepared statement announcing the firehouse memorial. “The observance will be brief and meaningful and is open to the public.”

The arboretum will dedicate an archway of 14 live trees, descendants of the Callery pear “survivor tree” that grew at ground zero, was discovered badly damaged in October 2001 and now lives at the National September 11 Memorial and Museum in New York.